Low ferrimagnetic damping in Gd3Fe5O12 epitaxial films grown using pulsed laser deposition

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  • S. Funada
    Institute for Chemical Research, Kyoto University 1 , Kyoto, Japan
  • D. Kan
    Institute for Chemical Research, Kyoto University 1 , Kyoto, Japan
  • K. Kuwano
    Institute for Chemical Research, Kyoto University 1 , Kyoto, Japan
  • Y. Shiota
    Institute for Chemical Research, Kyoto University 1 , Kyoto, Japan
  • R. Hisatomi
    Institute for Chemical Research, Kyoto University 1 , Kyoto, Japan
  • T. Moriyama
    Institute for Chemical Research, Kyoto University 1 , Kyoto, Japan
  • Y. Shimakawa
    Institute for Chemical Research, Kyoto University 1 , Kyoto, Japan
  • T. Ono
    Institute for Chemical Research, Kyoto University 1 , Kyoto, Japan

説明

<jats:p>The magnetic damping constant is a proportionality constant for energy dissipation upon the precession of the magnetic moment, and it characterizes magnetization dynamics. In this study, ferrimagnetic Gd3Fe5O12 (111) epitaxial films are grown using pulsed laser deposition, and the temperature dependence of the ferrimagnetic resonance and damping constant (αFiM) is investigated. The results reveal that αFiM is approximately an order of magnitude smaller than those of other ferrimagnetic metals reported to date. Our results emphasize the potential of Gd3Fe5O12 films in ultralow-power spintronic applications.</jats:p>

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